ARP Rocker Arm Nut - 7/16-20 in Thread - 0.600 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 Hood Pin making vapor lock and cavitation

making vapor lock and cavitation a thing of the past

The durable rubber boot keeps the sliding mechanism free of dirt and debris

1979-1991 GMC P3500

1/2 to 2 in

Withstands temperatures up to 1200 degreesF

ARP Rocker Arm Nut - 7/16-20 in Thread - 0.600 in Shank Diameter - 1.200 in Long - Chromoly - Black Oxide - Aluminum Rockers - Set of 16 Hood Pin making vapor lock and cavitationA rocker arm adjuster that doesn't require special tools and won't work loose. Threads on the heat treated Perma Loc Adjusters are machined exactly perpendicular to the adjuster bottom. a set screw is also machined flush on the bottom. All of these features help eliminate setting valve lash on a regular basis. Since 1968, ARP is the fastener of champions and the world leader in fastener technology. Product Description: Rocker Arm Nut 7 16 20 in Thread